Improvement in stove-pipe thimbles



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Stovepipe Thimble. No. 102,044. A Patented April 19. 1070.

` .MWMf en MPETERS. PHnTn-UTVNOGRAPNER. WASHINGTON, D. C.

defied 5mm @anni dii-iw.

PHILIP HENRY Rosh AND MILLER EAENEY HUDSON, or cANANnAIcIIA7 NEW YORK.

Letters Patent No. 102,044, dated April 19, 1870.

IMPROVEMENT IN STOVE-PIPE THIMBLES.

The Schedule referred. to in these Letters Patent and making part of the sama To all whomet may concern:

Be it known that we, PHILIP HENRY ROSE and MILLER BARNEY HUDSON, of Canandaigua, in the county of Ontario and' State of New York, have invented a certain new and useful Improvement iu Safety-Tubes for Stove'and other Pipes, of which the following is a-specication, reference being had to the accompanying drawings.

Nflture of I Mention.

This invention consists iu the construction and arrangement of the tube of two parts, which are made to slide together with but a single cylinder, the usual interior cylinder or band being dispensed with.

General Description.y

-In the drawings, the figure represents .a sectional -perspective viewhivith the pipe indicated in dotted lines. l

The tube is made of sheet metal, and of lthe usual form.

A A are the heads, and

B, the cylinder.

The latter is made in two parts, a a', in the form of bands or rings, attached respectively to the heads, and made to `fit and slide one within the other, as shown.

The usual interior cylinder, which rests close to the. pipe, is dispensed with, and the pipe simply rests against the inward anges b b of the heads, thus leaving the space between said pipe and the single outer cylinder B entirely open, andwitliont the interpositon f'any thickness of metal;

The ordinary holes c c, forA the. passage of' air, are formed in the heads.

Instead of these holes the anges b b, next the pipe, may be scalloped or grooved, to give additional exit or passage of the air through.

This will still lessen the contact surface of the pipe with the anges.

The advantages of' this arrangement are as follows:

First, the tube is extensible, and can, therefore, be fitted to any thickness of' the partitions, oors, or ceilings. The parts can also be drawn apart, for cleaning out dust, &c., thereby keeping the reecting-surface clear and unobstructed.

Second, by dispensing with thel ordinary interior cylinder, there is less contact with the pipe, and less accumulation and conduction of' heat, as the pipe touches only at the flanges b b.

rIhe inner cylinder which is ordinarily used, but which we avoid, formsan integral part of' the tube, and accumulates and conducts much of the heat to the other parts. Here it is avoided, and the cold air, flowing over the pipe, carries off the excess of heat through the holes. lhe'absence ofthe inner cylinder brings the radiation of the pipe upon the outer cylinder, and there it is reflected by the bright surface.

By-repeated tests we have found that this reflection is such that the outer cylinder remains constantly cool, under ordinary temperature, which is not Vthe case where the inner cylinder is used.

There is also a special advantage in cleaning the chamber of dust or dirt, to do which .it is only necessary to remove the pipe, when .the whole interior is open and may be brushed out.

Vhere the double band is used, as inthe old arrangement, there is an inclosed annular space between the cylinders which cannot be reached.

'e are aware that an open cylinder, with a spring arrangement to hohl the pipe 'n1 place, has been used, as in the patent of. E. C. Chapman, September 7, 1869; but such is not the equivalent of our arrangement, nor is that feature combined with an extensible tube with two heads.

That we claim as our invention, and desire to secureby Letters Patent, is-

Ihe construction and arrangement of' the safetytube, as herein described, consisting of the two parts .A a A a', sliding one within the other, and forming but asingle outside cylinder or band, B, which reflects the heat, and avoids contact of the pipe, except at the separated anges b b, as herein specified.

In witness whereof we have hereunto signed our names in the presence of two subscribing witnesses.

PHILIP HENRY ROSE. MILLER BARN EY HUDSON. Witnesses:

' LESTER P. THOMPSON,

M. LAUGHLIN. 

